arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.09381eess.SYcs.SY
收藏

具有安全保障的自动驾驶随机模型预测控制:扩展版本

Stochastic Model Predictive Control with a Safety Guarantee for Automated Driving: Extended Version

Tim Brüdigam, Michael Olbrich, Dirk Wollherr, Marion Leibold

摘要:

自动驾驶汽车需要在不确定的环境中进行有效和安全的规划。大多数情况下,这种不确定性是由其他交通参与者引起的,例如,周边车辆。周围车辆的未来运动通常难以预测。而鲁棒控制方法实现安全,但保守的自动车辆的运动规划,随机模型预测控制(SMPC)提供了有效的规划存在的不确定性。应用概率约束以确保最大风险保持在预定义水平以下。然而,由于可能违反概率约束,无法确保安全性,这对于自动驾驶车辆是不可接受的。在这里,我们提出了一个有效的轨迹规划框架与自动驾驶汽车的安全保证。SMPC被应用于获得有效的车辆轨迹有限的地平线。基于第一优化SMPC输入,使用可达集规划有保证的安全备份轨迹。此备份用于覆盖SMPC输入(如有必要),以确保安全。证明了安全SMPC算法的递归可行性。高速公路模拟表明所提出的方法的有效性,性能和安全性。

英文摘要:

Automated vehicles require efficient and safe planning to maneuver in uncertain environments. Largely this uncertainty is caused by other traffic participants, e.g., surrounding vehicles. Future motion of surrounding vehicles is often difficult to predict. Whereas robust control approaches achieve safe, yet conservative motion planning for automated vehicles, Stochastic Model Predictive Control (SMPC) provides efficient planning in the presence of uncertainty. Probabilistic constraints are applied to ensure that the maximal risk remains below a predefined level. However, safety cannot be ensured as probabilistic constraints may be violated, which is not acceptable for automated vehicles. Here, we propose an efficient trajectory planning framework with safety guarantees for automated vehicles. SMPC is applied to obtain efficient vehicle trajectories for a finite horizon. Based on the first optimized SMPC input, a guaranteed safe backup trajectory is planned using reachable sets. This backup is used to overwrite the SMPC input if necessary for safety. Recursive feasibility of the safe SMPC algorithm is proved. Highway simulations show the effectiveness of the proposed method regarding performance and safety.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑